Vontaze Burfict, ILB, Arizona State

Vontaze Burfict has all the physical tools to make a name for himself in the NFL, but he has a clear attitude problem.

The junior standout from Arizona State is a freakish athlete that possesses the necessary size to be a Pro Bowl defender in the NFL.

Burfict has drawn comparisons to future Hall of Fame linebacker Ray Lewis because of his passion for the game.

However, he’s very undisciplined on the field. He occasionally blows assignment and is no stranger to sucking in too thin on play action. One of Burfict’s biggest flaws is his knack for playing past the whistle and picking up unnecessary personal fouls.

He’s a very talented defender but if he doesn’t learn to create some sort of balance and level-headedness within his game we may never see Burfict become the player that he’s capable of in the NFL.

Vontaze Burfict is a talented football player, I can't say it enough, but he let’s his penalties effect his performance and that to me is a huge red flag, giving Burfict a lot of bust potential.

Alshon Jeffery, WR, South Carolina

Alshon Jeffery is the ultimate boom-or-bust prospect in the 2012 draft class.

I mean just look at his numbers from 2010 to 2011: 88 receptions to 49 receptions, 1,517 yards to 762 yards and nine touchdowns to eight.

He certainly has the potential to be great but he has a tendency to disappear. I understand that he had major quarterback issues and lost his running back to injury but there is no question that Alshon Jeffery fell invisible at times when he was called upon to be the lead man in his offense.

He’s not thought of as the fastest guy in the world—he runs between a 4.5 and a 4.6—but compensates with eye-popping circus catches and is best in jump ball situations.

Jeffery is good, but defenders are bigger and certainly faster in the NFL.

If Jeffery is called upon to be the lead guy in an NFL offense we may see him disappear again and not live up to the standard set by fellow SEC receivers A.J. Green and Julio Jones.

Trent Richardson, RB, Alabama

Let me start by saying that I’m a huge Trent Richardson fan but we are all aware of how difficult it is for a running back to live up to the hype.

Trent Richardson is far and away the best running back in the 2012 class and his 1,679 yards and 21 touchdowns will likely garner him a top five overall selection come April.

Richardson is a beast, we know that, but so were Cedric Benson, Reggie Bush and CJ Spiller coming out of college and none of them have lived up to the expectation of their lofty selections.

Not to mention, the NFL is becoming a pass heavy league.

Richardson is a very strong pass blocker and an above-average receiver out of the backfield, so that will help, but there is a strong chance that we don’t see Richardson become the next Adrian Peterson or Darren McFadden.

Janoris Jenkins, CB, Northern Alabama

Janoris Jenkins is one of the finest pure athletes there is in the 2012 draft class but character concerns could derail his career.

Many forget, but Jenkins story leading to the NFL is one of much turbulence and travel.

He’s a former All-SEC cornerback at Florida but Urban Meyer dismissed him from the team for multiple run-ins with the law including a misdemeanor marijuana charge.

Like Terrelle Pryor, he flirted with the NFL supplemental draft but opted to attend D-II Northern Alabama.

At Northern Alabama he produced a rather successful season as both a cornerback and punt returner but let’s take that with a grain of salt.

Against D-II competition, Jenkins looks like a man amongst boys because when it all boils down, he’s still an elite D-I athlete. Nevertheless, Jenkins’ production at Northern Alabama will cause a lot of teams to turn his way, possibly even overdraft him.

I’m not completely sold on Jenkins’ cover ability on the NFL level because of his evolving character concerns. Who knows, though, he may just be a better punt returner.

Ryan Tannehill, QB, Texas A&M

I’m going to start by saying that I’m speaking about Ryan Tannehill specifically but this goes for every single quarterback in the draft not named Andrew Luck or Robert Griffin III.

Someone is going to overdraft this kid because of how weak the 2012 quarterback class is. Simply put, without Matt Barkley or even Landry Jones the quarterback supply just doesn’t meet the demand.

However, that is no excuse to reach for a quarterback who was a starting college wide receiver no more than two years ago.

He’s shown that he’s certainly capable of playing quarterback, throwing for over 3,700 yards, 29 touchdowns and posting over a 61 percent completion rate but his accuracy and arm strength aren’t exactly NFL caliber.

Reports have also shown that Tannehill has a broken bone in his foot that may require surgery and will be cause for him to miss the Senior Bowl—which would have been a final test for him to pass before the draft.

Ryan Tannehill isn’t an elite quarterback in this draft, nor will anyone size him up to be, but it’s likely a team reaches to the early second round to grab him.

Devon Still, DT, Penn State

Devon Still was the 2011 Big Ten Defensive Player of the Year and for good reason, he had a monster season for Penn State’s defensive line recording 17 tackles for loss.

Still is widely regarded as the best defensive tackle in the 2012 class but that hasn’t come without its share of criticisms.

A lot of his skills are still raw. For instance, CBSSports’ NFL Mock Drafts place Still at No. 8 overall to the Carolina Panthers, but point out that he hasn’t yet harnessed his initial quickness to be a good pass rusher on the next level.

Still hasn’t quite hit his pinnacle yet and has used a strong senior campaign to boost his draft stock all the way to the opening of the first round.

He’s raw, and when ever you see a guy rise the draft boards based mainly on their potential you always have to be concerned about bust potential.